Bump importlib-metadata from 3.10.0 to 4.0.0

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 3.10.0 to 4.0.0.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/CHANGES.rst)
- [Commits](python/importlib_metadata@v3.10.0...v4.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

test-requirements.txt

@@ -102,10 +102,14 @@ idna==2.10 \
     --hash=sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6 \
     --hash=sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0
     # via requests
-importlib-metadata==3.10.0 \
-    --hash=sha256:c9db46394197244adf2f0b08ec5bc3cf16757e9590b02af1fca085c16c0d600a \
-    --hash=sha256:d2d46ef77ffc85cbf7dac7e81dd663fde71c45326131bea8033b9bad42268ebe
-    # via -r test-requirements.in
+importlib-metadata==4.0.0 \
+    --hash=sha256:19192b88d959336bfa6bdaaaef99aeafec179eca19c47c804e555703ee5f07ef \
+    --hash=sha256:2e881981c9748d7282b374b68e759c87745c25427b67ecf0cc67fb6637a1bff9
+    # via
+    #   -r test-requirements.in
+    #   flake8
+    #   pluggy
+    #   pytest
 iniconfig==1.1.1 \
     --hash=sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3 \
     --hash=sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32
@@ -310,6 +314,7 @@ typed-ast==1.4.3 \
     --hash=sha256:f8afcf15cc511ada719a88e013cec87c11aff7b91f019295eb4530f96fe5ef2f \
     --hash=sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65
     # via
+    #   astroid
     #   black
     #   mypy
 typing-extensions==3.7.4.3 \
@@ -318,6 +323,7 @@ typing-extensions==3.7.4.3 \
     --hash=sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f
     # via
     #   black
+    #   importlib-metadata
     #   mypy
 urllib3==1.26.4 \
     --hash=sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df \